RSS - This XML file does not appear to have any style information associated with it. The document tree is shown below

i have a problem with my feed on wordpress that shows this message before the feed

This XML file does not appear to have any style information associated with it. The document tree is shown below.

https://www.rnbjunk.com/feed/

someone can let me know hot to resolve this and get back a result with a plain text feed like this

https://www.tpi.it/feed/

Thank you

Topic feed rss Wordpress

Category Web

About

Geeks Mental is a community that publishes articles and tutorials about Web, Android, Data Science, new techniques and Linux security.